Open AI gym too many values to unpack (expected 4)

Question

enter image description here

I'm trying to run Open ai gym on my jupyter notebook, but I keep getting this error. In the problematic line 17, there are 4 variables that match, why am I getting this error? The development environment is M1 Mac.

Answer 1

check how many parameter is return by following function.

env.step(action)

It may be return less than 4 parameters.